Gaëtan Verhoosel, a founding partner of Three Crowns, has been appointed Queen’s Counsel (QC). The appointment is by HM The Queen on the advice of the Lord Chancellor, following the recommendation of the independent Queen’s Counsel Appointments body. The designation of Queen’s Counsel, also known as “silk”, is an acknowledgement of excellence in advocacy. Gaëtan is one of six arbitration specialists in this year’s QC cohort of 101 appointees. The Lord Chancellor said of this year’s appointments, “I want to congratulate all recipients of this title on their forthcoming appointments and awards. The award of QC is highly sought after, and the expertise and eminence of this year’s pool is testament to the excellence of our world-leading legal sector”.

With this appointment, Gaëtan becomes the fourth QC in the Three Crowns partnership, joining Constantine Partasides QC, Reza Mohtashami QC, and Georgios Petrochilos QC.

Gaëtan said, “it is a true honour to receive this appointment and join other colleagues at Three Crowns, and those in the international arbitration community, who hold this distinguished title. I’m thankful to those who have helped me throughout my career and also to those who supported me during this rightly rigorous and demanding selection process”.

Constantine Partasides QC, a fellow founding partner, said, “this is well-earned recognition of Gaëtan’s accomplishments as a top advocate. All of his colleagues at Three Crowns are delighted for him”.


Gaëtan is a founding partner in the London office of Three Crowns. He has served as advocate and as arbitrator in a large number of both commercial and investment treaty arbitrations.

Gaëtan is a past Senior Co-Chair of the Arbitration Committee of the International Bar Association, a member of the SIAC Court of Arbitration, and was appointed to the ICSID Panel of Arbitrators by the Kingdom of Belgium. He teaches investment treaty law at King’s College School of Law in London.

In addition to being an English solicitor-advocate, Gaëtan is also an avocat à la cour (France) and abogado (Spain).

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